... and stabilized at 5 % after another 7 months. Further monitoring is planned to identify any long term creep in the room and pillar panel. 1. Introduction Although periodic convergence measurements cannot record continuous elastic and pseudo-plastic deformation of rock mass, 3D laser technology can be regarded...

... procedia engineering 191 deformation convergence trough vibration measurement result procedia engineering 191 ground level Abstract The old workings may still generate mining menace hazard around the Polish historic salt mines of Wieliczka and Bochnia, despite the fact that adequate...

... yielding support. To ensure the proper maintenance of the roadway the mine managers have to efficiently cope with the rock mass movements of various intensity (e.g. roof sag, floor heave, and horizontal convergence) as a result of the extraction pressure impact [1]. Procedia Engineering 191 ( 2017...

... Engineering olympic stadium tower avellan Consulting Engineer convergence propagation PPV vibration Case History vibrometer 2017. Elsevier Ltd. Permission to distribute - International Society for Rock Mechanics and Rock Engineering ...

... hangingwall conditions and pillar behavior In a rigid non-yield pillar environment, hangingwall convergence and scaling pillars are not anticipated. This abnormal behaviour had to be investigated to 999 Figure 8. Split up-dip mining layout at 31 Chrome East Level. Figure 9. Vertical borehole fracture log...

...Rock Mechanics and Rock Engineering: From the Past to the Future Ulusay et al. (Eds) © 2016 Taylor & Francis Group, London, ISBN 978-1-138-03265-1 The effect of over excavation on the time-dependent convergence of a drift in Callovo-Oxfordian claystone L.M. Guayacán-Carrillo & D. Seyedi Andra R&D...

..., Berlin, Australia ABSTRACT: The thorough and accurate measurement of rock mass deformation or convergence is often limited to the use of a small number of discrete point to point measurements. These measurements are often not representative of how a rock mass is responding to the excavation of material...

... (1944). Upstream Oil & Gas displacement rock mass behavior debernardi Simulation Artificial Intelligence three-dimensional model Politecnico knowledge management numerical method convergence excavation application landslide rock mass construction Barla tunnel excavation...

... were already completely fractured even though it did not appear that way along the external surfaces of a pillar. However, it was found that at some point the pillars experienced no further reduction in stress whilst the pillars continued to deform. This observation was also verified by the convergence...

... Abstract Convergence measurements have been conducted and interpreted in order to characterize the deformation behaviour of various layers of a salt dome in northern Germany. The evaluation and interpretation of the convergence data have shown a distinctive influence of the geological units...

... of the tunnel walls along different directions clearly showed important anisotropic behaviour, in accordance with the preferential directions of the main mechanical weakness planes. In this paper, the analysis of the convergence measurements is performed for the sections between chainage 1250 and 1385 where...

... displacement spv 3 cross-section itc 2014 tunnel Ceneri Base Tunnel Reservoir Characterization convergence Gotthard Base Tunnel lithological type falanesca 2013 structural geology measuring point merlini rock mass schistosity deformation excavation ggium base tunnel...

... Upstream Oil & Gas ljubljana lining Reservoir Characterization karavanke tunnel convergence railway tunnel temporary support overburden pressure excavation tunnel tube road base tunnel material parameter primary lining permo-carboniferous rock karavanke mountain range tunnel...

... Association (2003) after the displacement of section is judged to converge. Road tunnels in Japan are periodically inspected every five years, referring to the technical regulation by MLIT (2014). After tunnels open for operation, the countermeasure, installing inverted arches with large cracks over lining...

... calculation convergence sustainable lining rock mass lining concept deformation ?ABSTRACT: The Konrad mine near Salzgitter, Germany, is currently in the process of being rebuilt as a repository for radioactive waste with negligible heat generation. Due to the operating constraints the lining...

... and the in situ initial stress. Depending on this ratio, Hoek & Marinos (2001), and Hoek (2001) 805 suggest a criterion based on an estimation of the tunnel convergence: We consider that this approach for a tunnel can be extrapolated for a cavern, as a first analysis, but needs to be confirmed by analysis based...

... Abstract The initial objective has been to establish a methodology to use the convergence-confinement method in order to design the roadways support based on yielding steel arches, obtaining the same results than those from an empirical method widely used in coal mines. The mining method...

... behavior.This paper presents a comprehensive analysis of the geotechnical data, including convergence and extensometric measurements, face extrusion measurements, stress measurements in the lining. The strain distribution in the rock mass around the tunnel and ahead the face and the stress distribution...

... the Nepal Himalaya P. Kumar Shrestha & K. Kanta Panthi Department of Geology and Mineral Resources Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway ABSTRACT: Potentiality of plastic deformation in tunnels in the Himalayan rock mass is considerable. Tunnel convergence...

... measurements to identify the properties that best model the behaviour of the mass and hence determine the best characterisation method. The results show that the monitoring procedure defined is highly effective, thanks to a number of innovations, such as the measurement of the complete convergence...